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Structural Rehabilitation

To remain in good operating condition, buildings require regular inspection, maintenance, and repair. The majority of repairs during a building’s service life are minor and a part of planned maintenance. Yet, despite best efforts, structural elements, components, or systems sometimes perform inadequately, deteriorate, or fail. As a result, these structures require specialized structural repair.

APPROACH

SGH uses the combined expertise of past construction practices, material science, and structural analysis and design to diagnose the causes and significance of structural distress, to develop safety measures if required, and to design effective structural solutions to address problems in a timely fashion.

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The “bathtub” slurry wall at the World Trade Center (WTC) site survived when the WTC towers collapsed in 2001, making it a symbol of endurance. WTC site redevelopers wanted a section of the wall incorporated and exposed within the...

The State House was constructed in three phases. The original Federal/Georgian building was designed by Charles Bulfinch and completed in 1798. In 1896, a renaissance revival Annex with yellow brick and marble features was added onto the back of...

The San Francisco War Memorial Veterans Building and adjacent Opera House are aesthetically-similar, Beaux-Arts structures commemorating U.S. veterans of World War I. The Veterans Building provides office and meeting space for veterans...

Looking to position themselves as a leading performing arts destination, Baltimore Center Stage undertook an extensive transformation project. As the structural engineer of record, we designed structural modifications to support a major...

The University of the District of Columbia wanted to renovate the Theater of the Arts building and address ongoing leakage at the same time. The theater building adjoins and lies partially beneath three overlapping elevated plazas with integral...

Designed by H.H. Richardson and Frederick Law Olmsted in the 1870s, the 203-acre Richardson Olmsted Campus began as the Buffalo State Asylum for the Insane. The 38-building site is listed on the National Register of Historic Places and was...

Completed in 1929, the Stanley Mosk Library and Courts Building is part of the Capitol Extension Group listed on the National Register of Historic Places and is a California Historical Landmark. The building suffered from aging building systems,...

The retail development at 706 Madison Avenue is five above-grade and two below-grade stories of new construction surrounding an existing landmark building. The project included preserving the two street-facing facades and a complete interior...

The Portsmouth Naval Shipyard owns and maintains a temporary steel modular-enclosure system to protect submarines during overhaul, repair, and modernization operations. While a contractor was repairing the modules in a nearby staging area, strong...

Expansion of the Minera Escondida copper mine included constructing a corrugated steel structural plate arch tunnel. The tunnel acts as a buried bridge to carry a haul road over the mine’s conveyor system. During construction of the...

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Slab design and preparation is critical to a project’s success and requires close attention to both structural and waterproofing concerns during the design process. It is important to understand how different types of concrete slabs are applied to help project teams design and construct the right type of slab for long-term performance.

The North Texas Municipal Water District (NTMWD) is considering making improvements to the transmission system and pumping scenarios to provide redundancy to their Wylie-Rockwall-Farmersville (WRF) Pump Station, and the planned pumping...

Washington Suburban Sanitary Commission (WSSC)’s condition assessment and repair program on critical transmission mains continued in spring 2016 with a record-breaking project where a total of forty-one 60 in. to 66 in. diameter prestressed...

Since the beginning of carbon fiber reinforced polymer (CFRP) lining of pipes in the late 1990s, thousands of feet of pipe have been lined with CFRP in hundreds of projects across the United States. In the last decade, the author has been directly involved in the initial and final development of this technology and has applied it to pipes with various diameters, distress conditions, design loads, etc. in more than one hundred project

After years of wear and neglect, a 42nd Story rooftop sundeck was so badly deteriorated the building occupants no longer utilized the space. During the sundeck rehabilitation, the condominium association elected to change the finishes, which...

Parking structures are an integral element in our daily lives that create an interchange between our homes, our destinations, and our built environment. These structures are often incorporated into buildings, integrated into the surrounding...

This series of articles discusses a number of commonly encountered structural issues on renovation and restoration projects that focus on historic houses of worship, and provides guidance on ways to address them. Parts one, two, and three of this...

This series of articles discusses some of the commonly encountered structural issues with renovation projects focusing on historic buildings of this type, and provides guidance on ways to address them. Part two of this series focuses on wall...

This webinar addressed the issue that transient activity within water pipelines causes wire breaks in pre-stressed concrete cylinder pipelines (PCCP). The webinar also discussed how the cause of the transients can be determined and how, by...